Thermal stability of a quantum rotation sensor

Ehsan Arabahmadi, Daniel Schumayer, Mark Edwards, Ben Eller, and David A. W. Hutchinson

Phys. Rev. A 104, 033323 – Published 28 September 2021

Abstract

We investigate the thermal instability of a Bose-Einstein condensate stirred by a rotating barrier in a ring-shaped trap. One would expect the critical angular speed to decrease with increasing temperature due to depletion of the condensate. However, we show that the critical velocity remains approximately constant within a considerable range of temperatures, contrary to expectation, and the thermal cloud has a stabilizing effect.

Received 6 July 2021
Accepted 7 September 2021

DOI:https://doi.org/10.1103/PhysRevA.104.033323

Physics Subject Headings (PhySH)

Bose-Einstein condensates Vortices in superfluids

Bogoliubov-de Gennes equations Mean field theory

Condensed Matter, Materials & Applied PhysicsAtomic, Molecular & Optical

Authors & Affiliations

Ehsan Arabahmadi ^1,*, Daniel Schumayer ^1,†, Mark Edwards ^2,‡, Ben Eller ³, and David A. W. Hutchinson ^1,2,4,§

¹Dodd-Walls Centre for Photonic and Quantum Technologies, Department of Physics, University of Otago, Dunedin 9016, New Zealand
²Department of Physics, Georgia Southern University, Statesboro, Georgia 30460-8031, USA
³Chemical Physics Program, University of Maryland, College Park, Maryland 20742, USA
⁴Centre for Quantum Technologies, National University of Singapore, Singapore 117543

^*ehsan.arabahmadi@postgrad.otago.ac.nz
^†daniel.schumayer@otago.ac.nz
^‡edwards@georgiasouthern.edu
^§david.hutchinson@otago.ac.nz

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Vol. 104, Iss. 3 — September 2021

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